Electromagnetic relay



Abrill, 1934. o. DRoYsEN 1Q9'53929 l f ELEcTnouAGNsTIc RELAY Filed May 6, 19x51 Patented 10, 1934 PATENT orf-Fics Applicatienlaye,

InGel'lnany 'IClaima armature is disposed within the exciting coil,-the

relay thus occupying as little space as possible, and that the path of the magnetic ux of this coil is so governed asto secure a reliable action Y l on the amature.

The invention will be fully understood from the following description and be particularly pointed out inthe appended claims, reference being had kto the accompanying drawing in which- Fig. 1 is a section view of one embodiment.

Fig. 2 shows a section on the line 2-2 of Fig. 1.

Fig. 3 is a plan of this device.

Fig. 4 is a section of a modiiication of the arrangement represented by Figs. 1 to 3.

Fig. 5 is an end elevation, partly in section, of still another modification.

Like numerals of referencen denote like parts in the several views.

1 indicates exciting coils. 2 denotes the arma-A tures. 3 indicates U-shaped bodies of iron or like material adapted to conduct magnetic lines of force. By 4, 5, 6, '1 terminals of electric circuits are denoted. One of these circuits is'represented in Fig. 1 by wires 8 soldered to the terminalsA, 5. The armatures 2 are to make and break contact with such terminals so as to close or open the said circuits. 'Ihe terminals 4 to 'I are fitted in insulating bars 9 and are insulated from the bodies 3 by paper, pasteboard Vor the like 10. Screws 11 are holding the parts together, as will be seen from Figs. 1 and 4.

In the construction shown in Figs. 1 to 3 there Yaretwo coils 1 fixed by the screws 11 to the same o boiLv 3. The frame oi' either coil has three chambers 12. Each chamber 12 contains an armature 2 lying on the bottom thereof when in its position of rest. The body 3 is provided with a slot 13 in either of its lateral portions. Fig. 2 shows one of these slots. The bars 9 are arranged to form also a 'guide for the armatures 2.

Whenever a current is caused to pas through one or the other of the coils 1. or through both ofthem, thebody 3being ofsoftironorthelike willtake upthe magneticlinesofforceoftheenergized coils so as to gather these lines of force for a concentrated action on the armatures 2. Inthisway eitherthreeorallthesixarmatures2accordingtowhetheroneorbothofthe coilsareenergizedareoperatedtomakecontact .middleportionsbyaconducting mi, sci-m No. man

my 11, im

(ci. ma)

withtheterminals4, 5soastoclosetheasociaied electric circuits. The armatures fall back into their positionsof restassoonasthecoils are deenergized. 'Ihe slot 13 is to prevent the coils from iniiuencing each other. o

Pig. 4 shows two bodies 3. The lower one is a permanent magnet so as to present a north pole Nandasouthpole S. ThearmatureZ ofeach chamber 12 when in its normal position rests upon twc terminals s, '1 cc that the vassociated circuit 05 is in a closed condition.

In order to operate the armature 2 the current passed throughthecoil mustbeofsuchadirection that at the terminal 6 a north pole and at the terminal 'I a south pole is produced in the ar- 70 mature to lovercome the attraction the magnetic poles N, S are exerting on the armature. If the current supplied to the coil flows in the other direction there will be produced in the armature a'southpole at6and anorth poleat'lsoasw 75 increase the force with which the armature under the iniiuence of the poles N, S adheres to the terminals 6, 7. This relay thus responds to currents of a denite direction only.

A modification of the arrangement illustrated 8 inrig.4canbecreatedbysubstitutingalsothe upper body 3 by a permanent magnet. This second magnet is so disposed that the south pole thereof is at the terminal 4 and consequently the north pole located at the terminal 5. This modication can be readily imagined from Fig. 4 and therefore is not shown. As explained with referencetoFig.4,thearmature2willberaised ifthecurrentpassedthroughthecoilliiowsin adefinitedirection. Assoonasraisedthearma- 9 tureisattractedbytheuppermagnetSandis 'heldinthispositionsoastomaintaintheclosure ofthecircuitoftheterminals4,5 Thisreiay, thusneedsnolockingcircuitandcanbeoperatedbyimpulses. It can, for instance,beactu 95 ated by means of condensers. A current flowing intheotherdirectionthroughthecoillwillaet tobringthearmaturebackintothenormal pomtion.

Intheconstructionshowninlllg.5twobodies3 100 areprovidedasinFig.4. '1hese.however,are furnishedoneltherlateralportionwithacurrent coil 15. Thesecoils areseparatefromeach otliexisothatineachoi'theendsa,b,c,!,ofthev bodies3eitheranorthpoleorasouthpoiecan 105 beproduced,uponthedirectioninv whichthecimentsarecausedtofiow-thrwgh thecoilsl. Thebodies3areoonnectedattheir bridge 1i. no

If at a and d south poles, at b and c north poles are generated then the operation is the same as in the case of the arrangement shown in Fig. 4, if the upper body 3 of this arrangement is a 5 permanent magnet as described.

If, however, north poles are produced, for instance, at a and b, and south poles generated at c and d, then the following operation takes place: The current passed through the coil 1 will polarize the armature 2 in accordance with the direction in which it ows, as is the case also in the constructions shown in Figs. 1 to 4.

This direction be such, for example, as to produce a north pole at the terminal 6 and a south pole at the terminal '7. The armature is consequently attracted at c and repelled at d so as to assume a; diagonal position in which it connects thefterminals 5, 6 with each other.

If on'th'e contrary the current, exciting coil 1, flows in the other direction so as to generate in the armatureia south pole at 6 and a north pole at 7, then the armature is attracted at d and repelled at c, thus taking up a diagonal position in which it connects the terminals 4, '7 to one another.

This relay is in this way adapted for operations that can not be effected by means offthe known devices. v

While each chamber 12 is shown to contain only one armature 2, a number thereof may be tted in each chamber. Such modication can be readily imagined from Fig. 4 or 5 and is, therefore, not illustrated. It may consist, for instance, in a multiple provision of the parts 2 and 4 to 7, the groups composed of these parts being disposed above orv below each other. An arrangement of this kind allows of controlling a larger number of electrical circuits than is the case in the constructions represented. A

It is to be understood that still other details of the constructions disclosed may be varied Within the scope indicated byv the appended claims, without departing from the spirit or 'icricing any of the advantages of this invenl 0n. v

What is claimed is:

1. In an electromagnetic device the combination of a channel-shaped magnetic conducting body, a plurality of exciting coils supported bysaid body with the coils positioned in the channel in spaced relation, eachv coil having a plurality of armatures arranged side by side and located therein, and means for making electrical contact with said armatures, the side walls of said channel-shaped member being slotted between adjacent coils thereby to prevent each coil from influencing adjacent coils. i

2: In` an electromagnetic relay, a channelshaped frame of magnetic material, an insulating spool supported by said frame. and positioned between the walls thereof and' having centrally disposed openings, an exciting coil carried by said insulating spool, armatures disposed in said openings, an insulating member secured to each wall of the channel-shaped member, a contact terminal for each armature carried by each insulating member, said'insulating members being disposed opposite said openings so as to serve as guides for their aramtures.

3. In an electromagnetic relay the combination of the exciting coil with an armature located within this coil and movable in a plane parallel to the axis of the coil, emans adapted for electric contact with such armature, and magnetic means disposed in the magnetic iiux of the said coil and adapted for a variable polarizing effect on said armature.

4. In an electromagnetic relay, the combina-v tending therethrough, a set of contacts extend- A ing into said opening, and an armature extending through said opening parallel to the axis of said coil and normally resting upon said contacts.

6.1I`n an electromagnetic relay, the combination of an exciting coil wound upon a spool, insulating members covering the ends of said spool, an armature extending through the opening of the spool and movable in a direction parallel to the axis of the spool, and contactsextending through said insulating members engageable by said armature.

7. In an electromagnetic relay, an exciting coil having an opening extending therethrough, a plurality of' separately excited magnetic conductors, contacts extending into the opening of said coil, an armature freely disposed within said opening, and means for exciting saidseparately excited conductors whereby said armature selectively engages said contacts. 

